A case of median mandibular cyst and its review the literature.

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Median mandibular cyst is relatively uncommon among cysts developing in the oralmaxillary region. Two types, namely fissural and odontogenic cysts, have been suggested as the origin of this condition, and differentiation between the two types is considered to be clinically and histopathologically difficult.<BR>A patient with a median mandibular cyst, which was considered clinically and histopathologically to have originated from d fissural cyst, was examined. The patient, a 25-year-old Negro, showed a cyst-like radiolucent image over the 4-3 region. The teeth in the 4-4 were all normal and free of caries. Histopathologically, the cystic wall was lined with stratified squammous epithelium and covered externally with a layer of connective tissue. Part of the wall was rich in nerve tissue and exhibited a 3-layer structure.<BR>Criteria for a differential diagnosis has been suggested by various investigators, and the lesion in the present patient showed all the signs of a median mandibular cyst. Based also on histopathological findings, the lesion was diagnosed as a median mandibular cyst of fissural origin.
社団法人日本口腔外科学会の論文